.nav {
    width: 100%;
    height: 80px;
    background-color: rgb(235, 24, 33);
    position: relative; 
  }
  .menu1 {
    display: flex;
    justify-content: space-between;
    width: 80%;
    height: 80px;
    margin: 0 auto;
    padding: 0;
  }
    .menu1 > li {
    list-style: none;
    position: relative; 
    width: 100px;
    height: 80px;
  }
  .menu1 > li:hover{
    background-color: rgb(196, 11, 5);;
  }
  .menu2 {
    width: 100%;
    background: rgb(196, 11, 5);
    position: absolute;
    top: 100%; 
    left: 0;
    z-index: 1000;
    padding: 0; 
  }

  .menu2 > li {
    list-style: none;
  }
  .menu2 .sub-menu {
      display: flex;
      justify-content: center;
      font-family: '楷体';
      text-align: center;
      font-size: 18px;
      list-style: none;
      color: #fff; 
      text-decoration: none;
      height: 30px;
  }
  .menu2 > li:hover{
    background-color: rgb(175, 0, 0);;
  }
  .menu1 > li a {
    text-decoration: none;
    display: flex;
    width: 100%;
    height: 100%;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    font-family: '楷体';
    font-weight: 700;
    position: relative; 
  }
  
  .menu1 > li a span {
    font-size: 13px;
    letter-spacing: 2px;
    bottom: -15px; 
  }

  